@DreamyCarousel if you want to get an original one for the gameplay,get a replica,if you want to get the harder version,prepare some $500 for an OG p1/p2. If you want color ones,i think this is mostly about what you want (Gimmicks,characters,etc)
For gimmick i'll recommend the ON as it has M!Xing which is proclaimed as the best gimmick on color Tamas,yet if you want characters,you might want to get the P's,with enough modding you can get any character possible. But all is up to what you like.